LlamaIndex alternatives (2026)

LlamaIndex is a frameworks tool: Framework for agents over your data (RAG, document agents). Pricing, as the maker states it: Open source + paid cloud. Its GitHub repo has 52,485 stars. We found 127 tools in the directory that do overlapping work (building AI agents, data analysis, working with documents); 122 of them are open source and 1 list a free or freemium plan. Below are the 10 closest, ranked by how many tasks and sub-tasks they share with LlamaIndex, then by GitHub stars.

1. AstrBot (Open source): Open-source agent chatbot platform and framework that connects LLMs, plugins and tools to mainstream messaging apps for assistants, support bots and knowledge bases. Consider it because it does the same job with a different approach (open source).
2. DSPy (Open source): Stanford framework for programming rather than prompting language models, with optimizers that tune prompts and weights for RAG pipelines and agent loops. Consider it because it does the same job with a different approach (open source).
3. Haystack (Open source + cloud): Open-source orchestration framework for building production LLM apps, RAG and agents. Consider it because it also covers multi-agent orchestration.
4. llmware (Open source): Framework for building private, local RAG and agent applications with small specialized models on AI PCs, edge and self-hosted setups. Consider it because it also covers local and self-hosted.
5. UltraRAG (Open source): Low-code MCP-based framework from OpenBMB for building and debugging complex RAG pipelines with visible reasoning logic. Consider it because it does the same job with a different approach (open source).
6. Langchain.rb (Open source): Ruby library for building LLM-powered applications, RAG and assistants. Consider it because it does the same job with a different approach (open source).
7. BaseAI (See site): Web AI framework from Langbase for building AI agents with memory (RAG) and deploying them serverless. Consider it because it also covers memory.
8. Mastra (Open source): TypeScript framework for agents, workflows and RAG. Consider it because it also covers workflow automation.
9. PrivateGPT (Open source): Open-source API layer that turns local models into private AI applications, with RAG, tools, skills, MCP and text-to-SQL on any OpenAI-compatible server. Consider it because it also covers SQL and databases and local and self-hosted; it has more GitHub stars (57,594 vs 52,485).
10. txtai (Open source): All-in-one Python framework for semantic search, LLM orchestration and agents built on an embeddings database of vector, graph and relational indexes. Consider it because it also covers SQL and databases and multi-agent orchestration.

LlamaIndex vs alternatives at a glance

Written comparisons: LlamaIndex vs LangGraph

More: LlamaIndex listing · All frameworks tools · All alternatives pages

Related searches: Free AI document and RAG tools · Open-source AI agent frameworks

Alternatives are picked from directory data only: same category plus shared tasks and sub-tasks. Pricing is as each maker states it; GitHub stars as recorded on each listing.